13) What does the total number of pixels in the region defines? a) Perimeter b) Area c) Intensity d) Brightness 14) The two steps: one is the creation of new pixel locations, and other is the assignm gray levels to those new locations are involved in a) Shrinking b) Zooming c) All of the mentioned d) None of the mentioned 15) Which of the following is a receptor in the retina of human eye? a) Rods b) Cones c) Rods and Cones d) Neither Rods nor Cones 16) Ratio of number of rods to the number of cones is a) 1:20 b) 1:2 c) 1:1 d) 1:5 17) Two regions are said to be, a) Adjacent b) Disjoint c) Closed d) None of the Mentioned 18) For a region R, the set of points that are adjacent to the complement of R is called a if their union forms a connected set. a) Boundary b) Border c) Contour d) All of the Mentioned 19) What are the basic quantities that are used to describe the quality of a chromatic ligh source? a) Radiance, brightness and wavelength b) Brightness and luminance c) Radiance, brightness and luminance d) Luminance and radiance 20) Which of the following step deals with tools for extracting image components those ar useful in the representation and description of shape? a) Segmentation b) Representation & description c) Comprossion d) Morphological processing 21) convert a continuous sensed data into Digital form, which of the following is required? a) Sampling b) Quantization c) Both Sampling and Quantization d) Neither Sampling nor Quantization 22) The transition between continuous values of the image function and its digital equivalent is called. a) Quantization b) Sampling c) Restoration d) None of the Mentioned 23) What is the tool used in tasks such as zooming, shrinking, rotating, etc.? a) Sampling b) Interpolation c) Filters d) None of the Mentioned 24) Two images having one pixel gray value 01010100 and 00000101 at the same location, are operated against AND operator. What would be the resultant pixel gray value at tha location in the enhanced image? a) 10100100 b) 11111011 c) 00000100 d) 01010101 25) Images quantized with insufficient brightness levels will lead to the occurrence of a) Pixilation b) Blurring c) False Contours d) None of the Mentioned B) State the following statements whether True or False. Hence justify. a) Image can be obtained if histogram is given b) Histogram equalization and Linear contrast stretching always give the same result. c) If all the pixels in an image are shuffled, will there be any change in the histogram? Justify d) Enhancement process does not change the information content of image. e) For digital image having salt paper noise, median filter is the best filter.